[Tweeters] odd chickadee

[Doug Plummer]

A chickadee with an apparent eyestripe has been at my feeder today, and it
sure got my attention. It's highly unlikely to be a Mountain Chickadee, but
what's likely going on? Partially leucistic? Juvenile filling in its
feathers? Photos here:
https://www.flickr.com/photos/dougplummer/sets/72157719425489573

Doug Plummer
Seattle
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